The Pentagon has asked that all Navy and Marine personnel who were in the building at the time of the attack to call in to a toll-free number so that the services can put together a roster. That number is 1-877-663-6772.

NORFOLK, Va., Sept 11The U.S. Atlantic Fleet dispatched aircraft carriers to Washington and New York to provide air defenses for the nation's political and financial capitals after Tuesday's horrific attacks in both cities, officials said.

The fleet also sent guided missile cruisers and guided missile destroyers, capable of thwarting air attacks, and amphibious ships, equipped with onboard medical facilities, to New York.

"The amphibs have very extensive medical capabilities," said a spokesman the fleet. "The other ships are more defensive in nature, defensive-slash-security."

The U.S. Navy's Atlantic Fleet, based at Norfolk, Virginia was placed on the highest military alert, "Threat Con Delta" in the wake of what President George W. Bush called an "apparent terrorist attack" on New York and Washington.

Two hijacked commercial airliners crashed into the twin towers of New York's World Trade Center and a third plane crashed into the Pentagon in Washington, leaving untold numbers of people dead.

"We have not seen an attack like this, certainly not since Pearl Harbor," said Adm. Robert Natter, commander of the U.S. Atlantic Fleet.